How to input a trope structure

In order to prescribe the trope structure,

1. either a comma-separated list of 6 trope numbers from the set{1,2,…,35} must be input describing the complete trope structure of a tone row, e.g.
   1,2,7,13,11,2
   
2. or a part of the trope structure of a tone row must be input, e.g.
   2,7
   which is a trope structure of length 2.
3. or a blank-separated list of trope structures as in 2. must be input. E.g.
   1,2 7 13
   which consists of three structures of length 2, 1 and 1. Using AND demands that all the different parts must simultaneously occur in the trope structure of a tone row, whereas using OR at least one of these parts must occur in the trope structure of a tone row.
4. It is also possible to replace the occurrence of a single (numerical) digit by a dot . or by
   \d
   of exactly two (numerical) digits by two dots .. or by
   \d\d
   of arbitrary many digits by .* or by
   \d*.

• the occurrence of the input structure in the trope structure of a tone row in normal form,
• but also in its retrograde,
• or in its cyclic shifts. E.g. the sequence
  1,2,11
  is found in a tone row with trope structure
  1,2,7,13,11,2
  even though the three trope numbers occur at the end and the beginning of this sequence in retrograde order.)